Draft-equalizer



(No Model.)

' J. P. MGDOWELL.

DRAFT EQUALIZER- No. 414,432. Patented Nov. 5, 1889.

A TTU/Ml E V8.

ATnNT @einene JONAS I). iilCDOYEIi L, OF FOOTE, IOVA.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 414,432, dated November 5, 1889.

Application led August 14, 1889. Serial No. 320,728. (No model.)

T0 all whom it may con/cern.-

Be it known that I, JONAS P. M cDoWnLL, of Foote, in the county of Iowa and State of Iowa, have invented a new and Improved Draft-Equalizer, of which the following is a full, clear, and exact description.

Myinvention relates to an ilnprovementin draft-equalizers, and has vfor its object especially to improve the construction of the equalizer for which Let-ters Patent were granted to myself March 19, 1889, No. 399,766; and a further object of the invention is to provide a device especially adapted for attachment to the tongues of harvesters, which will beof simple and durable construction and in connection with which three or more horses may be employed.

The invention consists in the novel construction and combination of the several parts, as will be hereinafter fully set forth, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar figures of reference indicate corresponding parts in all the views.

Figure l is a plan view of the device applied to a tongue. Fig. 2 is a rear elevation, and Fig. 3 is a bottoni plan view, of the arm upon which the evener is pivoted.

Upon the left-hand side of the pole or tongue l() of the harvester, at the inner end, two parallel straps ll are pivoted, one strap being pivoted upon the upper face of the tongue and the other upon the under face, as illustrated in Fig. 2. Freni the right-hand side of the tongue a distance in advance of the straps 11 a horizontal arm 12 is pivoted by means of a single bolt passing through the arm and tongue, and the said arm, Which projects outward from the tongue at a right angle, is limited in its lateral movement by a brace or stay-plate 13, as shown in Fig. 3. The said arm is provided with a series of longitudinally-arranged apertures 14.

Upon the outer end of the arm 12 an evener 15 is centrally pivoted, and at each end of the evener, upon the upper side, a doubletree 16 is pivoted, the same being preferably effected by causing the clevis or clip to embrace the evener and doubletrees and by passing abolt the eveuer, and doubletrecs, illustrated in Figs. l and 2; but I desire it to be understood that the doubletrees may be otherwise attached, if desired. By this arrangement of the doubletrees upon the evener it will be observed that one. singletree I7 is upon the leftof the tongue near the grain-table and three singletrees 1S are located at the right of the tongue.

To the rear of the evcner, when parallel with the supporting-arm l2, a stop block or bracket 1) is vertically secured to the tongue, adapted to limit the rearward movement of the left-hand extremity of the evener and terferiug With the binder.

The prime object of this improvement is to cause all the draft to be sustained by a device attached to the left-hand side of the tongue in front of the doubletree at that end, and by so carrying the draft to make the binder run straight after the horses and cause it to take a full cut at all times. This I eect by securing to the left-hand side of the tongue in advance of the left-hand evener, as stated, an essentially-triangular bracket 20, the rear member of which bracket is straight and proapertures 2l, the bracket being inade to extend at a right angle to the tongue, as illustrated in Fig. l. This bracket 2O is connected with the straps ll at the inner end of the tongue, upon the left-hand side, by a drawbar 22, the forward end of the draw-,bar being biturcated to pass over the outer end of the bracket 20, and secured thereto by a suitable detachable' pivot-pin, and the inner end of the said draw-bar is passed between the straps 1l at their outer ends and pivoted at that point. The draw-bar is provided between these ends, preferably between the center and the inner end, with a series of apertures 23, and a connecting-bar 24 is employed to unite the draw-bar with the evener. This is effected by bifurcating both ends of the connecting bar and causing one bifurcated end to receive the supporting-arm 12 and the evener, the connecting -rod and support-ing arin and evener being secured one to the other by a pivot-pin 25, which passes through the meinthrough the horizontal members of the clevis,

bers of the connecting-bar, through the evener,

prevent the doubletree at that. end from invided with a series of longitudinally-arranged IOO and through one of the apertures 14 of the supporting-arm. This pivotal pin 25 is the pivot or fulcru m of the evener. The left-hand end of the connecting rod or bar 24 is preferably flattened and provided with a series of apertures 26, and this left-hand end is made to embrace the draw-bar at its apertured'portion, and is pivotally connected therewith by its pivot passing through one of the apertures of the connecting rod or bar and the registering aperture of the draw-bar. It Will be observed that I thus obtain three points of adjustment-namely, the adjustmentof the forward or outer end ofthe draw-bar upon the bracket 20, the adjustment of the lefthand end of the connecting rod or bar 24 upon the draw-bar, and t-he 4adjustment of the evener and the right-hand end of the connecting rod or bar upon the supporting-arm I2. By these means I am enabled to cause the bracket 2O upon the left-hand side of the tongue in front of the doubletree-rest to sustain the entire draft through the medium of the draft-bar 22, and by centering the draft at this point I cause the binder to run straight after the horses.

Having thus described my invention, I claim as new and desire to secure by Letters Patentl. The combination,With a tongue,` an arm, projected horizontally at a right angle to the same, an evener centrally and adjustably pivoted upon the said arm, and doubletrees pivoted to the said evener at its extremities, of a draw-bar pivoted upon the side of the tongue opposite to that carrying the said arm, the said draw-bar being pivotally attached to a bracket projected from the tongue near the inner end and adj us'tably pivoted upon a second bracket located in front of the evener, and an adjustable connecting-rod attached to the evener at its pivotal point and to the draft-bar, substantially as shown and described.

2. The combination, With a tongne, an arm projected horizontally from the right-hand straps attached to the left-hand side. of theV tongue near the inner end, a draw-bar pivoted to the said straps at one end and adjustably pivoted to the bracket at the other end, and a connecting-rod adj ustably attached to the draw-bar and connected with the righthand arm and evener by the pivotal pin of the latter, substantially as and for the purpose specified.

3. The combination, With a tongue,a horizontal arm pivoted to the right-hand side of the same, an evener adj ustably and centrally pivoted upon said arm, a doubletree attached to each end of the evener, and means, substantially as shown and described, for limiting the lateral movement of the arm andthe rearward movement of the left-hand doubletree, of an essentially-triangular bracket attached to the left-hand -side of the tongue in front of the extremity of the evener, the inner member whereof is provided Witha series of apertures, parallel straps secured to the tongue near the inner end and projecting beyond the left-hand side, a draw-bar pivoted at one end between said straps and connected With the apertured bracket by a det-achable pivot-pin, the said draw-bar being provided with longitudinaliy-arranged apertures, and a connecting-rod having apertures at the lefthand end and pivotally connected With the apertured portion of the draw-bar, the righthand end of the said connecting-rod being attached to the supporting-arm l2 and the evener by the pivotal pin of the latter, substantially as and for the purpose specified.

JONAS P. MCDOWELL.

Witnesses: JOHN W. WAIT, EDWARD F. MCARTER. 

